// pages/recommentSong/recommentSong.js
import request from "../../../utils/request";
import PubSub from "pubsub-js"
Page({

  /**
   * 页面的初始数据
   */
  data: {
  day : new Date().getDate(),
  month : new Date().getMonth() + 1,
  recommendList:[],
  index:0
  },
  /**
   * 生命周期函数--监听页面加载
   */
  onLoad(options) {
    // 判断用户是否登录
    let userInfo = wx.getStorageSync("userInfo")
    if(!userInfo){
      wx.showToast({
        title:"请先登录",
        icon: "error",
        success:()=>{
          wx.reLaunch({
            url:"/pages/login/login"
          })
        }
      })
    }
    this.getRecommendList()

    PubSub.subscribe("switchType",  (msg, type) => {
      let {recommendList, index} = this.data
      if(type==='pre'){
        (index===0) && (index = recommendList.length)
        index-=1
      }else{
        (index === recommendList.length - 1) && (index = -1)
        index+=1
      }
      //  更新下标
      this.setData({
        index
      })
      let musicId = recommendList[index].id
      PubSub.publish('musicId', musicId)
    })
  },

  async getRecommendList(){
    let recommendListData = await request("/recommend/songs")

    this.setData({
      recommendList: recommendListData.data.dailySongs
    })
  },

  toSongDetail(event){
    let {song, index} = event.currentTarget.dataset
    this.setData({
      index
    })
    wx.navigateTo({
      url:"/songPackage/pages/songDetail/songDetail?musicId=" + song.id
    })
  },
  /**
   * 生命周期函数--监听页面初次渲染完成
   */
  onReady() {

  },

  /**
   * 生命周期函数--监听页面显示
   */
  onShow() {

  },

  /**
   * 生命周期函数--监听页面隐藏
   */
  onHide() {

  },

  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload() {

  },

  /**
   * 页面相关事件处理函数--监听用户下拉动作
   */
  onPullDownRefresh() {

  },

  /**
   * 页面上拉触底事件的处理函数
   */
  onReachBottom() {

  },

  /**
   * 用户点击右上角分享
   */
  onShareAppMessage() {

  }
})